从迷宫的入口开始寻找一条到出口的路径。要求显示迷宫的布局，及找到的路径。走到某一步后，假定往下走有四个方向的可能，即上、下、左、右四个方向。-From the maze entrance to begin the search for a path to export. Requirement to demonstrate the layout of the maze and find the path. Go after a certain step, it is assumed that g